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 cellulose Co., Ltd.

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Polypropylene fiber
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Polypropylene fiber

 Polypropylene staple fiber


Polypropylene fiber is made from polypropylene pellets through the continuous process of the continuous process. The fibers are treated by special antistatic and ultraviolet radiation, and the fibers are dispersed evenly in mortar and can be used for a long time. Polypropylene staple fiber content of 0.6-1.8 kg/m3 mortar; Generally 0.9 kg/m3 mortar. According to the engineering site and different areas, the amount of fiber should be different, and the area with severe impact and freeze-thaw should be higher.


1. Physical performance and main parameters


The material

100% polypropylene

Elongation at break



Fiber type

Bunchy monofilament


3-12mm, or other specifications


The density of


Tensile strength

P 400 mpa


Resistance to acid, alkaline

Very high

Young's modulus

3.5 Gpa or higher


Melting point

About 160 ℃

Fiber diameter

31 microns


Thermal conductivity

Very low

Flash point

About 580 ℃


With the humidity

< 0.1%


Non-toxic materials


The low temperature resistance

The - 78 ℃ experiments tested fiber no change in performance

Aging resistance

The fibers undergo special anti-aging treatment


Function of two.


· it greatly improves the anti-cracking ability of mortar


In mortar, the random distribution of fiber can greatly weaken the stress of plasticity shrinkage and freeze-thaw.


Thus, the toughness of mortar is enhanced effectively, and the production of microcrack is suppressed.


· greatly improve the waterproof and anti-seepage properties of mortar


Fibers were distributed evenly in the mortar interlaced with each other in a large number of filaments have played an important role in the "retainer" aggregate, reduces the mortar on the surface of the drainage and aggregate segregation, in pool, basement engineering, roofing, cisterns, wall plaster, etc., using fiber as waterproof effect is significant, which can effectively solve the seepage problem.


· enhanced impact resistance and earthquake resistance


After the mortar solidification of the fiber products, the network enhancement system of the meshing of the thick fiber, which is tightly packed with cement, increases the toughness of the mortar and increases the limit tensile strength. When the mortar is impacted, the fiber absorbs a lot of energy, which enhances the impact and earthquake resistance of mortar.


3. Packaging: 20KG or 25KG woven bags per bag, with 1KG of each pouch.


Transportation storage: this product should be protected from rain. Should be stored in cool, ventilated storehouse, avoid direct sunlight.



Polypropylene fiber is made up of 100% polypropylene raw materials adding masterbatch, blending, spinning, stretching, anti-static and anti-ultraviolet radiation, such as synthetic fiber made of a special process, is a kind of special fiber concrete and mortar, concrete, cement mortar can effectively control due to shrinkage, dry shrinkage and temperature changes occurring in the course of crack, crack greatly improve the permeability resistance, resistance to salt grinding performance, increase the toughness of concrete, so as to improve service life.

Polypropylene fiber is mainly applicable to:

1. Anti-cracking and anti-seepage insulation mortar for industrial and civil buildings.

2. Anti-cracking and anti-seepage requirements of high basement and underground engineering, seawall DAMS and other salt water projects.

3. Various prefabricated concrete products.

4. Highway, bridge, tunnel, airport runway and other concrete.

5. The higher chemical plant is required for alkali and chemical corrosion.

Principle of polypropylene filament fiber:

The product by special antistatic and anti-ultraviolet treatment can be uniformly distributed in the concrete, its fiber trilobal cross section increases the fiber specific surface area, chemical grafting and physical modification of the fibre surface coarse porous, so greatly improved and the adhesion strength of the cement. Because the fiber is very thin, can form a disorderly to support system, effectively control plastic shrinkage of concrete and mortar early and drying shrinkage cracks, hinder the settlement cracks formation, permeability resistance, impact resistance, toughness and wear resistance is greatly increased so as to achieve the aim of extend the service life of buildings.

Physical properties and important parameters of polypropylene filament fiber products:

Materials: 100% modified polypropylene

Melting point: 165 ° C to 175 ° C

Fracture strength: > 690Mpa

Ignition: 590 ° C

Stretch length: 20 + 5 %

Alkaline: strong

Modulus of elasticity: greater than or equal to 7000Mpa

Fiber length: 3mm4mm, 6mm 12mm 16m 19mm... 180mm (according to customer's requirement)

Shape: Y type

Recommended dosage: high strength polypropylene is greater than 1 kg/m3, and the specific required concrete can reach 10kg/m3

Advantages and technology of polypropylene products


Advantages of polypropylene monofilament fiber products:

The most effective way to solve the non-structural shrinkage cracks in concrete is to add secondary reinforcing bars in concrete and enhance the tensile strength of plastic concrete.

Fibrous fiber, glass fiber, steel fiber and synthetic fiber are commonly used in concrete secondary reinforcing fiber. But the asbestos fiber, which is found to be carcinogenic to humans, has been banned internationally. Glass fiber is resistant to basic alkalinity. Although alkali - resistant glass fiber is changed, its function cannot be sustained. Steel fiber has a large amount of addition, high cost, complicated operation and special construction technology team, which also aggravates the problem of machine wear. Therefore, the modified polypropylene synthetic fiber is the most ideal material used in concrete secondary reinforcement. Its advantages: good dispersion, high binding force; Random distribution, secondary reinforcement; Physical reinforcement, anti-crack reinforcement; Anti-rust, anticorrosive and alkali resistance; Non-toxic and tasteless, high security; Simple construction and reliable economy.


The construction process of polypropylene filament fiber is recommended.


Each cubic meter of mortar/concrete is mixed with 1 kg of high strength polypropylene fiber, and the specific required concrete can be increased to 2 to 10 kg. (2-6 kg/m3) stirring time: make the fiber mortar/concrete, the mixing time should be increased by 30 to 60 seconds, and the concrete without delay. Operation procedure: add water, add fiber, stir, add aggregate, add cement, add water


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